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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Diethylamine is readily biodegradable (according to OECD criteria).

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable
Type of water:

Additional information

The biodegradation potential of diethylamine (CAS 109 -89 -7) was assessed in a modified MITI test according to OECD 301C (NITE, 1992). As inoculum, non-adapted activated sludge from 10 different sewage treatment plants was used. After 28 days, a degradation (based on O2 consumption, BOD(NO2)) of 69% was observed. Therefore, diethylamine was considered to be readily biodegradable according to OECD criteria.

The result is supported by a ready biodegradability test according to 79/831/EEC, Annex V, part C, comparable to OECD 301F. As inoculum, municipal activated sludge was used. Diethylamine was degraded to 76% after 28 days, the 10 -day window criterium was failed (BASF AG 1990, report no.: 01.89/0742, statistical re-evaluation of the raw data, BASF SE, 2010).